A data reference assistant apparatus includes a generator configured to generate data-type relation information between at least one of combinations of two data types from a database that manages component information and location relation information, the component information indicating components of data that include a data type of data, and the location relation information indicating a relational destination or a relational source between two or more of the data, for each of the data, and a recording unit configured to connect between two or more connectable combinations of the data-type relation information based on a matching result between the data type of the relational destination and the data type of the relational source, and to store the connected result in a storage unit as reference relation information for limiting a reference range of the database.